Explosion separation structure for shaft

Abstract

The invention relates to the manufacturing field of a motor, specifically to an explosion separation structure for a shaft, comprising a shaft, an explosion separation sleeve and a bearing. The explosion separation sleeve is embedded on the shaft and is corresponding to an inner cover of the bearing; the embedding uses a heating installation method; the explosion separation sleeve is embedded on an explosion separation surface of the shaft; the outer diameter of the explosion separation sleeve and the inner cover of the bearing form the gap explosion separation to satisfy the explosion separation requirements; when a stator and a rotor deflect or the inner parts of the stator and the rotor appear winding short circuit to produce abnormal substances in the rotation process of the motor, the inner cover of the bearing and the explosion separation sleeve on the shaft rub with each other; so only the inner cover of the bearing and the explosion separation sleeve are replaced to save time and labor and reduce the loss; compared that the shaft is disassembled from the rotor and the shaft is processed again, the structure saves the time, improves the efficiency and reduces the loss.

Description

technical field [0001] The invention relates to the field of motor manufacturing, in particular to a flameproof structure for a shaft. Background technique [0002] The explosion-proof three-phase asynchronous motor used for driving the auxiliary equipment in the coal mine, the flameproof method is the flameproof type I shell, and the rotating part uses the gap between the bearing inner cover and the shaft as the flameproof, and the matching surface is called the flameproof surface. The gap is less than 0.6 mm. Since the gap between the rotating parts of the motor is very small, less than 0.6 mm, when the motor is rotating, if the stator and rotor are eccentric during assembly or the windings burn inside and produce foreign objects, the inner cover of the bearing will rub against the shaft and be seriously damaged. At this time, the bearing inner cover and the shaft need to be replaced again. The processing cycle of the bearing inner cover is short and the processing is che...

AI Technical Summary

Problems solved by technology

Since the gap between the rotating parts of the motor is very small, less than 0.6 mm, when the motor is rotating, if the stator and rotor are eccentric during assembly or the windings burn inside and produce foreign objects, the inner cover of the bearing will rub against the shaft and be seriously damaged. At this time, the bearing inner cover and the shaft need to be replaced again. The processing cycle of the bearing inner cover is short and the processing is cheap; but the processing cycle of the shaft is long and the price is expensive. Quit in mind, and then install the processed shaft, which is time-consuming and laborious, and also caused a certain economic loss

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